Quarter	Billions of US Dollars
1993-10-01	0.09378
1994-01-01	0.00448
1994-04-01	-0.05005
1994-07-01	-0.02300
1994-10-01	-0.01724
1997-04-01	0.05051
1998-04-01	-0.04622
2003-07-01	0.00131
2004-01-01	-0.00127
2004-04-01	0.05074
2004-07-01	0.12422
2004-10-01	0.00182
2005-01-01	-0.18074
2005-04-01	0.10014
2005-07-01	0.02333
2005-10-01	0.06307
2006-01-01	0.21660
2006-04-01	2.94272
2006-07-01	-0.87586
2006-10-01	-1.54733
2007-01-01	1.00365
2007-04-01	0.47088
2007-07-01	-0.09477
2007-10-01	0.08990
2008-01-01	-0.93742
2008-04-01	0.29377
2008-07-01	0.24261
2008-10-01	-0.02656
2009-01-01	-0.48920
2009-04-01	-0.50755
2009-07-01	-0.16654
2009-10-01	-0.07907
2010-01-01	0.00098
2010-04-01	-0.01437
2010-07-01	0.01251
2010-10-01	-0.10432
2011-04-01	-0.03482
2011-07-01	0.03570
2011-10-01	0.00402
2012-01-01	-0.00108
2012-04-01	-0.06414
2012-07-01	-0.06340
2012-10-01	-0.00470
2013-01-01	-0.01785
2013-04-01	0.00287
2013-07-01	0.01082
2013-10-01	-0.00051
2014-01-01	0.03585
2014-04-01	-0.12128
2014-07-01	-0.02792
2014-10-01	0.03726
2015-01-01	0.10289
2015-04-01	-0.07418